How does item revision works in PDH? How not to see earlier revisions of an item in inventory or pur

Summary

How does item revision works in PDH? How not to see earlier revisions of an item in inventory or purchasing module?

Content

Hi Team,

My understanding is that when new revision gets effective the earlier revisions gets end dated. But when we go in Inventory or Purchasing I can see those earlier revisions coming in drop down there.

1) Now the question is what does revision end date meant , is it only wrt to PDH ?

2 ) How can we make earlier revisions not to appear any where in the system and to reflect only latest revision.

3) What all Item Groups and entities are revision controlled ? (Main , seeded , user defined EFF , EFF , Structure , attachment ) etc ? any doc will help me here